Originally Posted by wranglr88
ive got a 1970 skylark. its a boat, period. im looking to improve the suspension/handling, but im afraid of going too far, and getting a sway bar that is too much for the car. I'm looking to make the car handle better, but still have a comfortable ride. all im looking for is a front sway bar, but what size would be best: 1 1/8 - 1 3/8? any suggestions would help. Thanks guys!
The 64-72 GM A-body cars have a lot of suspension choices. They also understeer horribly. Fixing that requires a much stiffer REAR bar. Simply increasing the size of the front bar will reduce roll, but will also make understeer even worse.
Installing a rear bar requires boxed lower control arms in the back. The factory bar was 3/4", but aftermarket bars of 1" or more are available (Herb Adams sold a 1 1/2" rear bar). The Trans Am WS-6 1 1/4" front bar is a bolt-on, but you can also get up to a 1 1/2" front bar from the aftermarket.
One problem with large front bars is that the cheesy self-tapping screws that the factory used to hold the bar to the frame will pull out. The aftermarket kits use nut-serts that swage into the holes in the frame for added pull-out strength.